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US3761398A
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Method of treating sulfur containing mineral oils to reduce their sulfur content
Assignee: EIJI MUNEKATA JA
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Filing: 1971-01-26
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Granted: 1973-09-25
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Expires: 1991-01-26
Abstract
Abstract A METHOD OF TREATING SULFUR-CONTAINING MINERAL OILS TO REDUCE THEIR SULFUR IS DISCLOSED IN WHICH THE OIL IS CONTACTED WITH SUPERHEATED WATER, FOR EXAMPLE, BY COUNTER-CURRENT EXTRACTION TECHNIQUE.
Inventors
- 👤 E Munekata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:04
CPC Classifications
C; C10; C10G; C10G31/00; C10G31/08; C10G21/00; C10G21/06; C10G21/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |